Gregorian chants generally don't have too much in common with rock music. Sure, sometimes they set a brooding tone in an intro to a doom metal song, but rockers generally scream, growl, wail or sing.

Gregorian chant has persisted for more than a thousand years, but some fear the haunting melodies are in danger of fading away. That is, unless Stanford Professor William Mahrt has a voice in the ...

Timothy S. McDonnell, director of music ministries at the Institute of Sacred Music, Benjamin T. Rome School of Music at The Catholic University of America in Washington, conducts an Oct. 10 Gregorian ...